package com.example.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.conditions.query.LambdaQueryChainWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.example.reggie.common.R;
import com.example.reggie.entity.Employee;
import com.example.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;
import sun.security.provider.MD5;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /***
     * 员工登录
     * @param request 如果成功，将employee的id存入session并返回登录结果
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //将页面提交的密码password进行md5加密
        String password = employee.getPassword();
        password=DigestUtils.md5DigestAsHex(password.getBytes());

        //将页面提交的用户名username查数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();//包装查询对象
        queryWrapper.eq(Employee::getUsername,employee.getUsername());//封装条件
        Employee emp=employeeService.getOne(queryWrapper);//进行查询并返回结果

        //如果没有查询到，返回登陆失败结果
        if(emp==null){
            return R.error("登陆失败");
        }

        //进行密码比对
        if(!emp.getPassword().equals(password)){
            return R.error("密码错误");
        }

        //查看员工状态，如果为已禁用状态则返回员工已禁用。
        if(emp.getStatus() == 0){
            return  R.error("账号已禁用");
        }

        //登录成功，将用户的id存入session返回结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);


    }

    /***
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理session中保存的当前员工ID
        request.getSession().removeAttribute("employee");
        return  R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());

        //设置初始密码123456，进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //获得当前登录的用户的id
//        Long empId = (Long)request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);


        employeeService.save(employee);
//        try{
//            employeeService.save(employee);
//        }catch (Exception e){
//            return R.error("新增员工失败");
//        }

        return R.success("新增员工成功");
    }


    /**
     * 员工信息类分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page ={},pageSize={},name={}",page,pageSize,name);

        //构造分页构造器
        Page pageInfo=new Page(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper=new LambdaQueryWrapper();

        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);

        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody Employee employee){
        log.info(employee.toString());

        long id=Thread.currentThread().getId();
        log.info("线程id为{}",id);
//        Long empId =(Long) request.getSession().getAttribute("employee");
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据id来查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息");
        Employee employee = employeeService.getById(id);
        if(employee!=null){
            return R.success(employee);
        }
        return R.error("没有查询到对应的员工信息");
    }
}
